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Ubuntu 20.04 に rbenv で Ruby 環境を整える最小手順

Last updated at Posted at 2020-06-13

Ubuntu 20.04 に rbenv による Ruby 環境を整える最小手順をまとめてあります。

前提

  • Ubuntu 20.04 インストール直後
    • シェルは Bash
  • インターネット接続環境

※ WSL2 でも大丈夫です。

インストール

rbenv + ライブラリ

git clone https://github.com/rbenv/rbenv.git ~/.rbenv
echo 'export PATH="~/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(~/.rbenv/bin/rbenv init -)"' >> ~/.bashrc
source ~/.bashrc
git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build
apt install -y build-essential libssl-dev zlib1g-dev

rbenv でインストール

rbenv install 2.7.1
rbenv global 2.7.1

rbenv の update

rbenv 自体もアップデートする必要があります。ワンライナーでできます。

(cd "$(rbenv root)" ; git pull ; cd "$(rbenv root)"/plugins/ruby-build ; git pull)

あとがき

WLinux からの卒業を検討しております。

参照情報

EoT

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